The proxy-cache implementation in Cisco AsyncOS 8.0.x before 8.0.7-151, 8.1.x and 8.5.x before 8.5.2-004, 8.6.x and 8.7.x before 8.7.0-171-LD, and 8.8.x before 8.8.0-085 on Web Security Appliance (WSA) devices allows remote attackers to cause a denial of service (memory consumption)

Vulnerable Systems:
* Cisco AsyncOS 8.0.x before 8.0.7-151, 8.1.x and 8.5.x before 8.5.2-004, 8.6.x and 8.7.x before 8.7.0-171-LD, and 8.8.x before 8.8.0-085

Immune Systems:
* Cisco AsyncOS 8.0.x after 8.0.7-151, 8.1.x and 8.5.x after 8.5.2-004, 8.6.x and 8.7.x after 8.7.0-171-LD, and 8.8.x after 8.8.0-085

A vulnerability classified as problematic has been found in Cisco Web Security Appliance 8.5.3-051. This affects an unknown function of the component Proxy Cache Handler. The manipulation with an unknown input leads to a denial of service vulnerability. This is going to have an impact on availability.The weakness was disclosed 11/04/2015 as cisco-sa-20151104-wsa1 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is uniquely identified as CVE-2015-6292 since 08/17/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.